.w {
    width: 1316px;
    margin: 0 auto;
}
.header .login-btn {
    position: absolute;
    top: 60px;
    right: 303px;
    width: 90px;
    height: 40px;
    border-radius: 23px;
    font-size: 20px;
    background-color: #fff;
    color: #1483F9;
}
.header .login-btn:hover {
    background-color: #ecf5ff;
}

.banner {
    overflow: hidden;
    min-width: 1316px;
    height: 600px;
    background: #ffffff url(@/assets/images/indexBanner.png) no-repeat;
    background-size: 100% 100%;
}
.banner .w {
    margin-top: 230px;
    padding-left: 60px;
}
.banner .w h1 {
    padding-bottom: 50px;
    font-size: 88px;
    color: #fff;
}
.banner .w .begin-btn {
    width: 165px;
    height: 45px;
    border-radius: 25px;
    font-size: 28px;
    color: #3a3ae8;
    background-color: #2FDBB2;
}
.banner .w .begin-btn:hover {
    opacity: .7;
    background-color: #2fdbb2;
}
.feature {
    overflow: hidden;
    min-width: 1316px;
    height: 400px;
    background-color: #fff;
}
.feature h1 {
    margin: 20px 0 25px;
    text-align: center;
    font-size: 48px;
}
.feature .w ul {
    width: 1756px;
    margin: 0 45px;
}
.feature .w ul li {
    float: left;
    margin-right: 175px;
    text-align: center;
}
.feature .w ul li .feature_img {
    width: 177px;
    height: 182px;
}
.feature .w ul li .feature_img img {
    width: 100%;
    height: 100%;
}
.feature .w ul li h3 {
    margin-top: 25px;
    font-size: 16px;
    color: #666666;
}


.course {
    padding-bottom: 125px;
    background-color: #f7f7fb;

}
.course .img-1 {
    width: 100%;
    min-width: 1316px;
    background-color: #f7f7fb;
}
.course .img-1 img {
    width: 100%;
}
.course h1 {
    padding: 40px 0 50px;
    text-align: center;
    font-size: 48px;
}

.course .w .show {
    width: 1130px;
    margin: 0 95px 0;
}
.course .w .show .search input {
    width: 295px;
    height: 50px;
    margin-top: 50px;
    padding-left: 25px;
    border: 1px solid #bfbfbf;
    border-radius: 25px;
    font-size: 30px;
    /* 去掉点击输入框时出现的外框 */
    outline: none;
}
.course .w .show .search input:hover {
    border-color: #1382f9;
}
.course .w .show>ul {
    margin-top: 45px;
}
.course .w .show>ul>li {
    margin-bottom: 35px;
    border-radius: 14px;
    background-color: #fff;
}
.course .w .show ul li .cover {
    float: left;
    width: 404px;
    height: 220px;
}
.course .w .show ul li .cover img {
    width: 100%;
    height: 100%;
}
.course .w .show ul li .course-info {
    float: left;
    width: 325px;
    margin-left: 75px;
    padding-top: 45px;
}
.course .w .show ul li .course-info .hd {
    height: 35px;
    line-height: 35px;
}
.course .w .show ul li .course-info .hd h2 {
    display: inline-block;
}
.course .w .show ul li .course-info .hd span {
    float: right;
    width: 88px;
    height: 25px;
    margin-top: 5px;
    border-radius: 13px;
    line-height: 25px;
    color: #9e9fa0;
    text-align: center;
    background-color: #e7f2fe;
}
.course .w .show ul li .course-info .info-list {
    margin-left: 18px;
    margin-top: 25px;
}
.course .w .show ul li .course-info .info-list li {
    padding-bottom: 14px;
    font-size: 18px;
    color: #adadad;
    list-style-type: disc;
}
.course .w .show>ul>li .begin-btn {
    width: 200px;
    height: 45px;
    margin-top: 145px;
    margin-left: 50px;
    border-radius: 23px;
    background-color: #1382f9;
    font-size: 18px;
    color: #ffffff;
}
.course .w .show>ul>li .begin-btn:hover {
    background-color: #066ad8;
}
